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Thread: 1800cc or 109ci engine suggestions??

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    Default 1800cc or 109ci engine suggestions??

    Hi guys, been floating around the forum for a while, loads of great info!!
    i am hoping you can offer some suggestions for a suitable outboard to suit my new to me 15 foot hull. The rules here in australia allow for upto 1800ci or around 109ci maximum for this size hull.
    Its a pad vee bottom and is very light (i can lift the transom end from the trailer quite easily), i will be doing mostly long river races but also some club days circuit racing, mods to engine are basically free, just needs to run a shifting case as i understand it.
    I know an inline six is a good option, but i would like to know if there are any other good options?
    i've only played with v6 mercs but keen to try new stuff!
    Cheers, Jim
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  2. #2
    49ci OMC, Alum flat sabine river killer's Avatar
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    how big is a 115 - 130 yamaha
    All boat racers lie, accept me and you, but I am starting to question you.

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    the original OMC 140 at 1800cc has the most potential HP at that capacity class
    what mods does the class allow

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    i thought mods were open but i just re-read the rule book and it seems i was confused by the way it is written, ithink the motor needs to be stock for the mono class and is open to mods for the open hull class.

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    You might still have rules in the mod to keep it sensible like no sleeving under original and only stock crank stroke etc
    Maybe even stock looking powerhead?

  6. #6
    Burgess/Evinrude F1 V8 Lars Strom's Avatar
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    Default Evinrude E-Tec 115 H.O...105 cu in/1726 cc


    Martin Löfström the big winner in Oskarshamn, Sweden


    The Evinrude 115 H.O. was running great..a few gear case problems but that is fixed now.
    Congratulations to the win and a beautiful race boat.

    Click on the link below for more info and check this video.

    http://svera.se/blogg/martin-lofstro...-i-oskarshamn/
    Attached Images Attached Images  
    Lars Strom

    Life is good





    Check my own racing history at BRF...http://www.boatracingfacts.com/forum...ead.php?t=6727

    My racing web site SVERA.se....http://svera.se/blogg/paris-6-hours/

  7. #7
    Team Member fs5's Avatar
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    hi mate ,those pics look a lot better.
    i'm all for the tower of power!!
    but reckon one of them etecs would crack if you got the dollars.

    go the tower you don't see many over here.
    and they look way cool.

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    Hey mate! Kev's still got my old 1500xs so maybe I'll go talk to him!
    Gunna take the thundercat down to the bridge? There's a 60 mph class this year?
    Last edited by jim; 04-03-2014 at 02:41 AM. Reason: Auto correct

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    What exactly is a omc kr15??

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    The early 70's v4 race motor
    Had 8 barrel carbs

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